US4042561A
Expired / Lapsed
US
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Flame retardant compositions containing polyphosphazenes
Assignee: Celanese Corp
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Filing: 1976-05-20
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Granted: 1977-08-16
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Expires: 1996-05-20
Abstract
Abstract Normally flammable synthetic polymers selected from the group consisting of polyester resins, polyamide resins, cellulosic resins, polyolefins and their substituted derivatives, vinyl aryl compounds, polycarbonate resins, polyurethane resins and mixtures of the foregoing are rendered flame retardant by incorporating therein a flame retardant amount of polyphosphazene having the general formula: ##STR1## WHERE N IS AT LEAST 10, R and R' may be the same or different and represent aryl groups, y and y' may be the same or different and represent halogen and halogen substituted and unsubstituted lower alkyl (e.g., 1 to 10 carbon atoms), aryl, alkoxy, and aryloxy groups, and m = 0 to 10.
Inventors
- 👤 Andrew H. DeEdwardo
- 👤 Fred Zitomer
- 👤 Robert W. Stackman
- 👤 Charles E. Kramer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 12:26
CPC Classifications
C; C08; C08L; C08L85/00; C08L85/02; C08G; C08G79/00; C08G79/02; C08G79/025; C08L101/00
Claims Analysis
Total Claims: 31
Claim 1
Independent Claim
115 words
A flame retardant composition comprising a normally flammable organic material selected from the group consisting of polyester resins, polyamide resins, cellulosic resins, polyolefins and their substituted derivatives, vinyl aryl polymers, polycarbonate resins, polyurethane resins and mixtures of the foregoing, and a flame retardant amount of a polyphosphazene compound corresponding to the formula: ##STR14## when n is at least 10, R and R' may be the same or different and represent aryl groups, y and y' may be the same or different and represent halogen and halogen substituted and unsubstituted alkyl, aryl, alkoxy, aryloxy groups, and m = o to 10, which compound exerts a flame retardant effect in the gas phase and the bulk phase.
Claim 2
Dependent Claim
115 words
A flame retardant composition comprising a normally flammable organic material selected from the group consisting of polyester resins, polyamide resins, cellulosic resins, polyolefins and their substituted derivatives, vinyl aryl polymers, polycarbonate resins, polyurethane resins and mixtures of the foregoing, and a flame retardant amount of a polyphosphazene compound corresponding to the formula: ##STR14## when n is at least 10, R and R' may be the same or different and represent aryl groups, y and y' may be the same or different and represent halogen and halogen substituted and unsubstituted alkyl, aryl, alkoxy, aryloxy groups, and m = o to 10, which compound exerts a flame retardant effect in the gas phase and the bulk phase.
Claim 3
Dependent Claim
29 words
The flame retardant composition of claim 1 wherein y and y ' is a halogen selected from the group consisting of fluorine chlorine and bromine in said polyphosphazene compound.
Claim 4
Dependent Claim
30 words
The flame retardant composition of claim 1 wherein R and R' are phenyl and y and y' is a halogen selected from the group consisting of fluorine, chlorine and bromine.
Claim 5
Dependent Claim
15 words
The flame retardant composition of claim 1 wherein n is from about 100 to 15,000.
Claim 6
Dependent Claim
100 words
A flame retardant composition comprising a normally flammable organic material selected from the group consisting of polyethylene terephthalate, cellulose acetate, cellulose triacetate, and polystyrene and a flame retardant amount of a polyphosphazene compound corresponding to the formula: ##STR15## where n is at least 10, R and R' may be the same or different and represent aryl groups, y and y' may be the same or different and represent halogen and halogen substituted and unsubstituted alkyl, aryl, alkoxy, aryloxy groups, and m = 0 to 10, which compound exerts a flame retardant effect in the gas phase and the bulk phase.
Claim 7
Dependent Claim
100 words
A flame retardant composition comprising a normally flammable organic material selected from the group consisting of polyethylene terephthalate, cellulose acetate, cellulose triacetate, and polystyrene and a flame retardant amount of a polyphosphazene compound corresponding to the formula: ##STR15## where n is at least 10, R and R' may be the same or different and represent aryl groups, y and y' may be the same or different and represent halogen and halogen substituted and unsubstituted alkyl, aryl, alkoxy, aryloxy groups, and m = 0 to 10, which compound exerts a flame retardant effect in the gas phase and the bulk phase.
Claim 8
Dependent Claim
29 words
The flame retardant composition of claim 5 wherein y and y' is a halogen selected from the group consisting essentially of fluorine chlorine and bromine in said polyphosphazene compound.
Claim 9
Dependent Claim
30 words
The flame retardant composition of claim 5 wherein R and R' are phenyl and y and y' are a halogen selected from the group consisting of fluorine, chlorine and bromine.
Claim 10
Dependent Claim
15 words
The flame retardant composition of claim 5 wherein n is from about 100 to 15,000.
Claim 11
Dependent Claim
23 words
The flame retardant composition of claim 5 wherein the polyphosphazene compound is present in an amount of about 5 to about 30 percent.
Claim 12
Dependent Claim
88 words
A flame retardant composition comprising a polyester and a flame retardant amount of a polyphosphazene compound having the formula: ##STR16## wherein n may vary from about 100 to about 15,000 , R and R' may be the same or different and represent aryl groups, y and y' may be the same or different and represent halogen and halogen substituted and unsubstituted alkyl, aryl, alkoxy, aryloxy groups, and m = 0 to 10 , which compound exerts a flame retardant effect in the gas phase and the bulk phase.
Claim 13
Dependent Claim
88 words
A flame retardant composition comprising a polyester and a flame retardant amount of a polyphosphazene compound having the formula: ##STR16## wherein n may vary from about 100 to about 15,000 , R and R' may be the same or different and represent aryl groups, y and y' may be the same or different and represent halogen and halogen substituted and unsubstituted alkyl, aryl, alkoxy, aryloxy groups, and m = 0 to 10 , which compound exerts a flame retardant effect in the gas phase and the bulk phase.
Claim 14
Dependent Claim
28 words
The flame retardant composition of claim 10 wherein y and y' is a halogen selected from the group consisting of fluorine, chlorine, and bromine in said polyphosphazene compound.
Claim 15
Dependent Claim
19 words
The flame retardant composition of claim 10 wherein R and R' is phenyl and y and y' is fluorine.
Claim 16
Dependent Claim
107 words
A flame retardant composition comprising a polyalkylene terephthalate selected from the group consisting essentially of polyethylene terephthalate, polypropylene terephthalate, and polybutylene terephthalate and a flame retardant amount of a polyphosphazene compound having the formula: ##STR17## where n may vary from about 100 to about 15,000, R and R' may be the same or different and represent phenyl groups, and y and y' may be the same or different and represent a halogen selected from the group consisting of fluorine, chlorine, and bromine in said polyphosphazene compound, and m = 1 to 10, which compound exerts a flame retardant effect in the gas phase and the bulk phase.
Claim 17
Dependent Claim
107 words
A flame retardant composition comprising a polyalkylene terephthalate selected from the group consisting essentially of polyethylene terephthalate, polypropylene terephthalate, and polybutylene terephthalate and a flame retardant amount of a polyphosphazene compound having the formula: ##STR17## where n may vary from about 100 to about 15,000, R and R' may be the same or different and represent phenyl groups, and y and y' may be the same or different and represent a halogen selected from the group consisting of fluorine, chlorine, and bromine in said polyphosphazene compound, and m = 1 to 10, which compound exerts a flame retardant effect in the gas phase and the bulk phase.
Claim 18
Dependent Claim
27 words
The flame retardant composition of claim 13 wherein the polyphosphazene compound is present in an amount not exceeding 15 percent, by weight, of the flame retardant composition.
Claim 19
Dependent Claim
29 words
The flame retardant composition of claim 13 wherein the polyphosphazene compound is present in an amount ranging from 8 to 15 percent, by weight, of the flame retardant composition.
Claim 20
Dependent Claim
20 words
The flame retardant composition of claim 13 wherein the polyphosphazene compound is present in an amount of about 10 percent.
Claim 21
Dependent Claim
19 words
The flame retardant composition of claim 13 wherein R and R' is phenyl and y and y' is fluorine.
Claim 22
Dependent Claim
98 words
A process for the production of a flame retardant polyester composition comprising intimately admixing with said polyester a flame retardant amount of a polyphosphazene compound having the formula: ##STR18## where n may vary from about 100 to about 15,000 , and R and R' may be the same or different and represent aryl groups, y and y' may be the same or different and represent halogen and halogen substituted and unsubstituted alkyl, aryl, alkoxy, aryloxy groups, and m = 1 to 10 , which compound exerts a flame retardant effect in the gas phase and the bulk phase.
Claim 23
Dependent Claim
98 words
A process for the production of a flame retardant polyester composition comprising intimately admixing with said polyester a flame retardant amount of a polyphosphazene compound having the formula: ##STR18## where n may vary from about 100 to about 15,000 , and R and R' may be the same or different and represent aryl groups, y and y' may be the same or different and represent halogen and halogen substituted and unsubstituted alkyl, aryl, alkoxy, aryloxy groups, and m = 1 to 10 , which compound exerts a flame retardant effect in the gas phase and the bulk phase.
Claim 24
Dependent Claim
26 words
The process of claim 18 wherein the polyester is a polyalkylene terephthalate selected from the group consisting essentially of polyethylene terephthalate, polypropylene terephthalate, and polybutylene terephthalate.
Claim 25
Dependent Claim
27 words
The process of claim 19 wherein y and y' is a halogen selected from a group consisting essentially of fluorine, chlorine, and bromine in said polyphosphazene compound.
Claim 26
Dependent Claim
28 words
The process of claim 18 wherein R and R' are phenyl and y and y' is a halogen selected from the group consisting of fluorine, chlorine and bromine.
Claim 27
Dependent Claim
101 words
A process for the production of a flame retardant polyester composition comprising intimately admixing a polyalkylene terephthalate selected from the group consisting of polyethylene terephthalate, polypropylene terephthalate, and polybutylene terephthalate, with a flame retardant amount of a polyphosphazene compound having the formula: ##STR19## where n may vary from about 100 to about 15,000 , R and R' equal phenyl, y and y' is a halogen selected from the group consisting essentially of fluorine, chlorine, and bromine, in said polyphosphazene compound, and m = 1 to 10, which compound exerts a flame retardant effect in the gas phase and the bulk phase.
Claim 28
Dependent Claim
101 words
A process for the production of a flame retardant polyester composition comprising intimately admixing a polyalkylene terephthalate selected from the group consisting of polyethylene terephthalate, polypropylene terephthalate, and polybutylene terephthalate, with a flame retardant amount of a polyphosphazene compound having the formula: ##STR19## where n may vary from about 100 to about 15,000 , R and R' equal phenyl, y and y' is a halogen selected from the group consisting essentially of fluorine, chlorine, and bromine, in said polyphosphazene compound, and m = 1 to 10, which compound exerts a flame retardant effect in the gas phase and the bulk phase.
Claim 29
Dependent Claim
25 words
The process of claim 22 wherein the polyphosphazene compound is present in an amount not exceeding 15 percent, by weight, of the flame retardant composition.
Claim 30
Dependent Claim
20 words
The process of claim 22 wherein the polyphosphazene is incorporated into the polyester at a temperature not exceeding 330° C.
Claim 31
Dependent Claim
36 words
The process of claim 22 wherein y and y' = fluorine in said polyphosphazene compound and wherein said polyphosphazene compound is present in an amount of about 10 percent, by weight, of the flame retardant composition.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-08-15 | 1981-02-14 | 1981-08-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-08-15 | 1985-02-14 | 1985-08-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-08-15 | 1989-02-14 | 1989-08-16 | $7700.00 | Window Closed / Lapsed |